OR relation between meta_query and tax_query

Hi All

$post_args=array(‘post_type’ => ‘post’,
‘order’ => ‘DESC’,
‘meta_query’ => array(
‘relation’ => ‘OR’,
array(
‘key’ => ‘client_segment’,
‘value’ =>$firm_name ,
‘compare’ => ‘IN’,
),
array(
‘key’ => ‘perspective_date’,
‘value’ => array($start_date, $end_date),
‘compare’ => ‘BETWEEN’
)
),
‘tax_query’ => array(
‘relation’ => ‘OR’,
array(
‘taxonomy’ => ‘category’,
‘field’ => ‘id’,
‘terms’ => $read_type,
‘operator’ => ‘IN’)

),

);
$posts = new WP_Query($post_args);

This is my code how can I give OR relation between meta_query and tax_query.